[Antennas] Vertical antenna question

Tue Mar 18 00:59:39 EDT 2014

Shubham sent this direct to me. The attachment should be small enough to
pass through Qth.net without moderator help.
♥ QTC ♥
thankyou so much for your reply david..
i was thinking the same...here i am attaching few pictures with this
email ,please go through them and let me know that will its going to
work???
also i have 2 options for a dual band antenna
option 1 -- use 2 different length of 1/4 wave wires and hang them
side by side and feed them with the same ground radials and coax.....i
want to make a 14.200 and 21.200 mhz dual band vertical antenna
option 2 ..
i use a 8m vertical wire hung from a nearby tree with a 10m trap coil
located at the 6 m from the base feeding point...
which would be efficient and more effective???
many thanks
vu3sxn
shubham
On 3/17/14, D.J.J. Ring, Jr. <n1ea at arrl.net> wrote:
> Namaste Shubham,
>> Is this going to be a self supporting vertical made of piping or conduit,
> or one made out of wires?
>> I have used parallel wires in this system. I have also had a 20 foot pipe
> with an insulator art the bottom mounted on the rooftop with the bottom of
> the pipe near the window where the radio transmitter was, and I reached
out
> and changed the clip on a 3 inch diameter coil that I had previously found
> settings for low SWR and just changed the clip when changing bands. I
have
> found it easier to install a loop either diamond shaped or square shaped.
> Running parallel wires was easier on a loop, also called a quad element,
> but it is just one wavelength of wire, it can be in many different shapes,
> triangle, diamond, pentagon, etc.
>> 73
>> Dada David, N1EA
> On Mar 16, 2014 9:57 PM, "Shubham Tiwari De VU3SXN" <vu3sxn at gmail.com>
> wrote:
>>> Hi i am planning to construct a dual band vertical antenna for 14.200 and
>> 21.200 mhz..
>>>> Can any one help me that how can i make this type of antenna without
>> affecting much of the performance
>>>> Thanks
>> Shubham
>> Vu3sxn
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--
shubham tiwari
call sign -- VU3SXN
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